package chapter08;

/**
 * Created by V5470-I5 on 2016/3/31.
 */
public class StackTranceDemo3 {
    public  static  void main(String[] args){
        try{
            c();
        }
        catch (NullPointerException ex){
            ex.printStackTrace();
        }
    }
    static void c(){
        try {
            b();
        }
        catch (NullPointerException ex){
            ex.printStackTrace();
            Throwable t=ex.fillInStackTrace();
            throw (NullPointerException) t;
        }}
    static void b(){
        a();
    }
    static String a(){
        String text=null;
        return text.toUpperCase();
    }
}
